CUSIP 590328909
MERRIMACK PHARMACEUTICALS IN
4 institutions · $787.1K total · 96,100 shares
| # | Manager | Shares | Value | % of Total | Period |
|---|---|---|---|---|---|
| 1 | PURA VIDA INVESTMENTS, LLC | 40,200 | $460.7K | 41.83% | 2023-03-31 |
| 2 | GROUP ONE TRADING, L.P. | 22,100 | $326.4K | 22.99% | 2024-03-31 |
| 3 | SIMPLEX TRADING, LLC | 33,800 | $3 | 35.17% | 2024-06-30 |
| 4 | CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | $0 | 0.00% | 2024-03-31 |